<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <style>
    video::-webkit-media-controls-overlay-play-button {
      background: red;
    }
  </style>
</head>
<body>
  <template>
    <div>
      123
    </div>
  </template>
  <video width="320" height="240" controls>
    <source src="movie.mp4" type="video/mp4">
    <source src="movie.ogg" type="video/ogg">
  </video>
  <script>
    console.log(document.querySelector('.use-default-poster'))
  </script>
</body>
</html>